About Area Calculator
Area Calculator is a free, browser-based tool that lets you measure areas and distances on any image. Whether you're working with maps, floor plans, aerial photos, or site plans, simply upload your image, set the scale, and start drawing.
How It Works
- Upload an image — Drag and drop or click to browse. Supports PNG, JPG, and WebP formats.
- Set the scale — Click two points on the image whose real-world distance you know, then enter that distance. This calibrates all future measurements.
- Draw shapes — Click point by point to draw polygons. Close the shape by clicking the first point or double-clicking.
- Get results — Area and perimeter are calculated instantly and displayed in your chosen unit.
Key Features
- Draw multiple shapes with automatic color coding
- Drag vertices to adjust shapes after drawing
- Zoom and pan for precision on detailed images
- Export results as PNG, CSV, or copy to clipboard
- Save and load projects for later
- Works entirely in your browser — no data is uploaded to any server
Privacy
All processing happens locally in your browser. Your images and measurements never leave your device. See our Privacy Policy for full details.